{"id":2888,"date":"2026-08-22T09:57:16","date_gmt":"2026-08-22T01:57:16","guid":{"rendered":"https:\/\/poultryequipmentmanufacturers.com\/?post_type=news&p=2888"},"modified":"2026-08-22T09:58:30","modified_gmt":"2026-08-22T01:58:30","slug":"fully-automatic-brooding-cage-for-layer-hens-a-buyers-guide","status":"publish","type":"news","link":"https:\/\/poultryequipmentmanufacturers.com\/fr\/news\/fully-automatic-brooding-cage-for-layer-hens-a-buyers-guide\/","title":{"rendered":"Cage d'\u00e9levage enti\u00e8rement automatique pour poules pondeuses : guide d'achat"},"content":{"rendered":"

A fully automatic layer brooder cage<\/a> is a multi-tier rearing system built for chicks from day one to transfer, with automated feed, water, manure removal and climate control sized to birds weighing under 1.3 kg. It is specified separately from production cages because feeder height, mesh spacing and heating loads differ.
\nMost equipment catalogues treat the brooder cage as a line item under the layer range. That framing costs money later. A pullet that arrives at the production house 100 g under target weight, or from a flock with a body-weight coefficient of variation above 10%, does not recover its lost laying persistency, and no amount of production-house automation fixes it.<\/p>\n

\"Cages<\/p>\n

Why rearing and production cages are not the same machine<\/h2>\n

The two systems share a family resemblance and almost nothing else in their working dimensions.
\nA day-old chick weighs roughly 35\u201340 g and cannot reach a trough designed for a 1.8 kg hen. It falls through mesh spacing that safely supports an adult bird. It cannot regulate its own body temperature for the first two weeks, which makes the brooding house a heating problem before it is a ventilation problem. By week 16 the same bird needs perch and feeder access close to what she will find in the production house, or the transfer becomes a feeding disruption on top of a handling stress.
\nThat is the design brief for a rearing cage: one enclosure that works for a bird whose body weight increases roughly 35-fold across the period it occupies the cage.<\/p>\n

Manufacturers solve it with adjustable feed trough height, removable chick-guard mesh or a floor insert for the first weeks, and drinker lines on adjustable risers.<\/p>\n\n\n\n\n\n\n\n\n\n\n
Design dimension<\/td>\nRearing \/ brooding stage<\/td>\nProduction stage<\/td>\n<\/tr>\n
Hens weight served<\/strong><\/td>\n~35 g at placement to 1.2\u20131.5 kg at transfer<\/td>\n1.6\u20132.0 kg, stable<\/td>\n<\/tr>\n
Floor mesh<\/strong><\/td>\nFine spacing plus chick mat or insert for weeks 0\u20132<\/td>\nSloped egg-roll floor, adult mesh<\/td>\n<\/tr>\n
Feed trough height<\/strong><\/td>\nAdjustable across the cycle<\/td>\nFixed at one bird height<\/td>\n<\/tr>\n
Drinker line<\/strong><\/td>\nAdjustable height nipple line, low flow at placement<\/td>\nFixed height nipple line<\/td>\n<\/tr>\n
Primary climate load<\/strong><\/td>\nSupplemental heat, 33\u201335 \u00b0C at chick level in week 1<\/td>\nHeat removal and air speed<\/td>\n<\/tr>\n
Egg handling<\/strong><\/td>\nNone<\/td>\nBelt collection, central egg conveyor<\/td>\n<\/tr>\n
Occupancy<\/strong><\/td>\n~16\u201318 weeks per batch<\/td>\n~60\u201380 weeks per batch<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Hens weights and brooding temperatures shown here are general planning references drawn from commercial layer strain management guides. Confirm them against the specific management manual for the strain you place, because targets differ between Hy-Line, Lohmann and ISA lines and are revised periodically.<\/p>\n

Stocking density: the number that decides everything else<\/h2>\n

Density is where under-equipped brooding does most of its damage, and it is also the parameter competitor pages most often omit.
\nTwo mistakes recur. The first is planning density on final bird count rather than placement count, which ignores the fact that the same cage tier must hold chicks at week 1 and near-mature pullets at week 16. The second is planning on floor area alone while ignoring linear feeder space per bird, which is the constraint that actually drives uniformity.<\/p>\n

Work the calculation in this order:<\/p>\n

    \n
  1. Fix the placement number, including the mortality and culling allowance you intend to carry (a 3\u20135% total loss allowance across rearing is a common planning figure; use your own farm’s historical rate if you have one).<\/li>\n
  2. Take the strain manual’s cm\u00b2\/bird figure for the final week before transfer, not the average across the cycle. That is your binding constraint.<\/li>\n
  3. Cross-check linear feeder space per bird at the same final week. If the cage meets the area figure but not the feeder figure, uniformity will spread regardless of area.<\/li>\n
  4. Confirm drinker-to-bird ratio at the same week, and check the nipple flow rate at the far end of the longest line rather than at the header.<\/li>\n
  5. Divide by usable tier area, not gross cage footprint. Partition posts, feed hoppers and end frames consume area that the catalogue drawing may include.<\/li>\n
  6. Only then choose tier count, and re-check that the top tier remains reachable for inspection without a platform your staff will not actually use.<\/li>\n<\/ol>\n

    \"Cages<\/p>\n

    What “fully automatic” actually includes at the brooding stage<\/h2>\n

    The term covers different scopes across suppliers. At minimum, ask which of the following are in the quoted price and which are separate:<\/p>\n